Home / 5,187.80-7,158.92-3,198.54

Finding the Fourth Proportional to 5,187.80, 7,158.92 and 3,198.54

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Solution

The fourth proportional to 5,187.80, 7,158.92 and 3,198.54 is: 4,413.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,187.80 : 7,158.92 = 3,198.54 : x
  2. Step 2: Convert to fraction form
    5,187.80/7,158.92 = 3,198.54/x
  3. Step 3: Cross multiply
    5,187.80x = 7,158.92 × 3,198.54
  4. Step 4: Simplify right side
    5,187.80x = 22,898,075.98
  5. Step 5: Solve for x
    x = 22,898,075.98/5,187.80
  6. Step 6: Final answer
    x = 4,413.84

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.